doctors have been prescribing humira for over ten years. humira works by targeting and helping to block a specific source of inflammation that contributes to ra symptoms. for many adults, humira is proven to help relieve pain and stop further joint damage. humira can lower your ability to fight infections, including tuberculosis. serious, sometimes fatal events, such as infections, lymphoma, or other types of cancer, have happened. blood, liver and nervous system problems, serious allergic reactions, and new or worsening heart failure have occurred. before starting humira , your doctor should test you for tb. ask your doctor if you live in or have been to a region where certain fungal infections are common. tell your doctor if you have had tb, hepatitis b, are prone to infections, or have symptoms such as fever, . you should not start humira if you have any kind of infection. ask your doctor if humira can work for you. this is humira at work.